iter revert: back out the Iteration-discipline milestone (it.1 + it.2)

One forward iteration; main never rewound. 1ff7e81 (the pre-9973546 commit) is the per-region byte oracle — every reverted source/test file is byte-identical to it; crates/ailang-check/src/lib.rs fully so. Root cause being corrected: the Iteration-discipline milestone was an over-escalation of fieldtest finding F1 (a [friction] item whose own minimal recommendation was a DESIGN.md note). Its totality dichotomy made the maximally-LLM-natural build(d:Int)=Node(1,build(d-1), build(d-1)) inexpressible (it.3 BLOCKED); the only in-thesis escape (A1/it.2b) conceded the language's first documented-unenforced totality precondition — a purity-pillar dilution the user rejected in favour of a full revert + rebuild. Removed: Term::Loop/Term::Recur/LoopBinder; the verify_structural_ recursion guardedness pass + term_contains_loop + Diverge-injection + the transitively-it.2 module_fns plumbing; the five Recur*/ NonStructuralRecursion CheckError variants (+ code() + the 3 dedicated ctx() arms); the it.1 codegen loop-header/phi/back-edge + parallel block_terminated setter; all Loop/Recur walker arms; 16 it.1/it.2 fixtures; 2 pin files; bench/it3-oracle/. Restored: 2 RC fixtures to 1ff7e81 content. Surgically kept (not in 1ff7e81, landed with the milestone but independently sound): feature-acceptance clause 3 in DESIGN.md and skills/brainstorm/SKILL.md, with its worked example de-claimed from "shipped" to hypothetical-illustration form; the F3 P2 todo. bench/orchestrator-stats/2026-05-15-iter-it.{1,2,3}.json kept as historical record (like journals/plans). Sole net addition: an honest F1/F4 documented-idiom note in DESIGN.md (the tail-recursive accumulator fallback; examples/mut_counter.ail), guarded by a doc-presence test — "a documentation note is not a reshape", asserts nothing at the typecheck level. Roadmap: the Iteration-discipline block + blocking-fork section removed; the genuine total-Int-recursion ambition preserved as a deferred P2 milestone sequenced behind a future Nat/refinement-types milestone (not abandoned — correctly sequenced after the type machinery it needs). 2026-05-15-iteration-discipline.md carries a superseded header; it.1/it.2/it.3 journals + plans stay as history. Correctness gate PRISTINE: 164 surviving 1ff7e81-era fixtures ail check/ail run byte-identical to pre-milestone behaviour (verified against a 1ff7e81 worktree reference compiler, zero drift); cargo test --workspace 600/0; zero residual it.1/it.2 production surface. Spec docs/specs/2026-05-16-iteration-discipline-revert.md (b3853bf), plan docs/plans/2026-05-16-iter-revert.md (abf0013).
2026-05-16 01:28:47 +02:00
parent abf00131c1
commit 37ac704bf3
93 changed files with 307 additions and 5014 deletions
@@ -1,41 +0,0 @@
-stem	class	migration	runnable	rec_fns	note
-bench_closure_chain	a	loop	main	run_loop:loop	
-bench_compute_collatz	a	loop	main	collatz_steps:loop,sum_steps_loop:loop	
-bench_compute_intsum	a	loop	main	intsum_loop:loop	
-bench_hof_pipeline	a	plaincall	main	build_n:structural,fold_with_fn:structural	
-bench_latency_explicit	a	BLOCKED	main	build_tree:BLOCKED,cons_n_acc:structural,sum_list_acc:structural,loop:structural	BLOCKED:build_tree
-bench_latency_implicit	a	BLOCKED	main	build_tree:BLOCKED,sum_tree:structural,cons_n_acc:structural,sum_list_acc:structural,loop:structural	BLOCKED:build_tree
-bench_list_sum	a	plaincall	main	cons_n_acc:structural,sum_acc:structural	
-bench_list_sum_explicit	a	plaincall	main	cons_n_acc:structural,sum_acc:structural	
-bench_mono_dispatch	a	plaincall-or-loop	?	(self-rec via loop/letrec only)	
-bench_tree_walk	b	BLOCKED	main	build_tree:BLOCKED,sum_tree:structural	BLOCKED:build_tree
-borrow_own_demo	c	already-structural	main	list_length:structural,sum_list:structural	
-ct_1_ordering_signum	a	plaincall	main	drain:structural	
-escape_local_demo	b	loop	main	count:loop	
-fieldtest/floats_1_newton_sqrt	a	loop	main	newton_iter:loop	
-fieldtest/floats_2_average_int_list	a	plaincall	main	sum_acc:structural,count_acc:structural	
-fieldtest/forma_1_factorial	a	loop	main	fact_acc:loop	
-gc_stress	b	loop+structural	main	build:loop,sum_list:structural	
-list	c	already-structural	main	sum_list:structural	
-list_map	c	already-structural	main	map_int:structural,print_list:structural	
-list_map_poly	a	plaincall	main	map:structural,print_list:structural	
-mut_counter	a	loop	main	sum_helper:loop	
-mut_sum_floats	a	loop	main	sum_helper:loop	
-pat_extract_partial_drop	c	already-structural	main	sum_list:structural	
-rc_drop_iterative_long_list	a	plaincall	main	cons_n_acc:structural	
-rc_let_alias_implicit_param	a	BLOCKED	main	build:BLOCKED,loop:structural	BLOCKED:build
-rc_let_owned_app_leak	b	BLOCKED	main	build:BLOCKED	BLOCKED:build
-rc_list_drop	c	already-structural	main	sum_list:structural	
-rc_pin_recurse_implicit	a	BLOCKED	main	build:BLOCKED,loop:structural	BLOCKED:build
-rc_tail_sum_explicit_leak	a	plaincall	main	cons_n_acc:structural,sum_acc:structural	
-reuse_as_demo	c	already-structural	main	map_inc:structural,sum_list:structural	
-sort	a	plaincall	main	insert:structural,sort:structural,print_list:structural	
-std_either_list	c	already-structural	checkonly	lefts:structural,rights:structural,partition_eithers:structural	
-std_list	a	plaincall	checkonly	fold_left:structural,fold_right:structural,append:structural,map:structural,filter:structural,take:structural,drop:structural	
-std_list_stress	b	loop	main	build:loop	
-struct_rec_foldl_sum	c	already-structural	checkonly	go:structural	
-struct_rec_list_len	c	already-structural	checkonly	len:structural	
-struct_rec_sum_e2e	c	already-structural	main	sum:structural	
-struct_rec_tree_forest	c	already-structural	checkonly	forest_size:structural	
-sum	b	loop	main	sum:loop	
-test_mono_recursive_fn_bug	a	loop	main	loop:loop	
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+{
+  "iter_id": "revert",
+  "date": "2026-05-16",
+  "mode": "standard",
+  "outcome": "DONE",
+  "tasks_total": 11,
+  "tasks_completed": 11,
+  "reloops_per_task": {
+    "1": 0,
+    "2": 0,
+    "3": 0,
+    "4": 0,
+    "5": 0,
+    "6": 0,
+    "7": 0,
+    "8": 0,
+    "9": 0,
+    "10": 0,
+    "11": 0
+  },
+  "review_loops_spec": 0,
+  "review_loops_quality": 0,
+  "blocked_reason": null,
+  "notes": {
+    "self_caught_implementer_corrections": 1,
+    "self_caught_detail": "Task 4: a scripted line-range delete also removed verify_tail_positions' match/fn closing braces; caught by the disciplined full-file oracle diff in the implementer phase and fixed forward within the same task (not a spec/quality re-loop).",
+    "stop_gates_cleared": ["task3-step1-helper-provenance", "task8-step1-fixture-split"],
+    "concerns": 2,
+    "concern_detail": "Task 3 plan file-map under-enumerated the module_fns signature threading (resolved via oracle authority, no bounce); Task 9 Step-6 single-line grep heuristic returned 0 due to verbatim-text line-wrap (substantive clause-3 retention positively verified otherwise).",
+    "behavioural_equivalence": "164 surviving fixtures, fail=0, zero check/run drift vs 1ff7e81 — pristine",
+    "workspace_tests": "600 passed, 0 failed",
+    "main_head_moved": false
+  }
+}